Flags

The object flags define the bus behavior of the object they represent.

6 different object flags are defined:

C: the Communication flag

R: the Read flag

T: the Transmit flag

W: the Write flag

U: the Update flag

I: the Initialization flag

If set:

C-flag

All other flags are enabled for this object.

R-flag

The device will for this object react to a GroupValueRead telegram coming from the bus, i.e. it will send a GroupValueResponse telegram to the bus.

T-flag

The device will for this object transmit any updated object value, i.e. it will send a GroupValueWrite telegram to the bus. For a push button object this e.g. means that a rocker representing this object was manipulated.

W-flag

The device will for this object react to a GroupValueWrite telegram coming from the bus, i.e. it will overwrite the object value. For a switch actuator this e.g. means that a relay representing this object will be opened or closed.

U-flag

The device will for this object react to a GroupValueResponse telegram coming from the bus, i.e. it will overwrite the object value. For a switch actuator this e.g. means that a relay representing this object will be opened or closed.

I-flag:

The device will for this object after device reset send a GroupValueRead telegram. The purpose is to get the object value via a GroupValueResponse. The reason for the device reset could be a power failure, an explicit bus reset or an explicit device reset request via a telegram.